Home / 21,725.39-29,980.19-12,293.75

Finding the Fourth Proportional to 21,725.39, 29,980.19 and 12,293.75

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Solution

The fourth proportional to 21,725.39, 29,980.19 and 12,293.75 is: 16,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.39 : 29,980.19 = 12,293.75 : x
  2. Step 2: Convert to fraction form
    21,725.39/29,980.19 = 12,293.75/x
  3. Step 3: Cross multiply
    21,725.39x = 29,980.19 × 12,293.75
  4. Step 4: Simplify right side
    21,725.39x = 368,568,899.34
  5. Step 5: Solve for x
    x = 368,568,899.34/21,725.39
  6. Step 6: Final answer
    x = 16,964.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.